<!DOCTYPE html>
<html lang="en">
<head>
  <base href="/" />
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Vue ES Module</title>
  <style>
    * {
      box-sizing: border-box;
    }

    body {
      margin: 0;
      font-family: sans-serif;
    }
  </style>
</head>
<body>
  <div id="app"></div>
  <script type="module" src="main.js"></script>
</body>
</html>